2004 Lexus IS300 Tire

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TIRE INFORMATION
Tire symbols
SV63011c

The illustration indicates typical tire symbols.
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1Tire size: For details, see Tire sizeº on page
354.
2DOT and Tire Identification Number (TIN): For
details, see DOT and Tire Identification Number
(TIN)º on page 354.
3Maximum cold tire inflation pressure: This
means the pressure to which a tire may be
inflated. For recommended cold tire inflation
pressure, see Specificationsº on page 342, 344
or 345.
4Load limit at maximum cold tire inflation
pressure: For details, see Checking and
replacing tiresº on page 365.
5Turning indicator: Some vehicles are equipped
with directional tires. For details, see Rotating
tiresº on page 363 or 364.
6Tire ply composition and materials : Plies
mean a layer of rubber-coated parallel cords.
Cords mean the strands forming the plies in the
tire.
7Uniform tire quality grading: For details, see
ºUniform tire quality gradingº that follows.
8Location of tread wear indicators: For details,
see Checking and replacing tiresº on page 365.
9TUBELESSº or TUBE TYPEº: A tubeless tire
does not have a tube inside the tire and air is
directly filled in the tire. A tube type tire has a
tube inside the tire and the tube maintains the air
pressure.
10Radial tires or bias-ply tires: A radial tire has
ºRADIALº on the sidewall. The tire not marked
with ºRADIALº is a bias-ply tire.
11Summer tire or all season tire: An all season
tire has M+Sº on the sidewall. The tire not
marked with M+Sº is a summer tire. For details,
see Types of tiresº on page 362.
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DOT and Tire Identification Number (TIN)
SV63015

The illustration indicates typical DOT and TireIdentification Number (TIN)
1ºDOTº symbol
2Tire Identification Number (TIN)
3Tire manufacturer's identification mark
4Tire size code
5Manufacturer's optional tire type code
6Manufacturing week
7Manufacturing year
The DOTº symbol certifies that the tire conforms to
applicable Federal Motor Vehicle Safety Standards.
Tire size
SV63014a

Type A
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SV63013a

Type BThe illustration indicates typical tire size.
1Tire use (P=Passenger car, T=Temporary use)
2Section width (in millimeters)
3Aspect ratio (tire height to section width)
4Speed category (alphabet with one letter)
5Tire construction code (R=Radial, D=Diagonal)
6Wheel diameter (in inch)
7Load index (2 digits or 3 digits)
8Speed symbol (alphabet with one letter)
SV63012c

1Section width
2Tire height
3Wheel diameter
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Name of each section of tire
SV63016

1Bead
2Sidewall
3Shoulder
4Tread
5Belt
6Inner liner
7Reinforcing rubber
8Carcass
9Rim lines
10Bead wires
11Chafer
Uniform tire quality grading
This information has been prepared in accordance
with regulations issued by the National Highway
Traffic Safety Administration of the U.S. Department
of Transportation. It provides the purchasers and/or
prospective purchasers of Lexus vehicles with
information on uniform tire quality grading.
Your Lexus dealer will help answer any questions
you may have as you read this information.
DOT quality grades - All passenger vehicle tires
must conform to Federal Safety Requirements in
addition to these grades. Quality grades can be
found where applicable on the tire sidewall between
tread shoulder and maximum section width. For
example: Treadwear 200 Traction AA Temperature
A
Tread wear - The treadwear grade is a comparative
rating based on the wear rate of the tire when tested
under controlled conditions on a specified government
test course. For example, a tire graded 150 would wear
one and a half (1 - 1/2) times as well on the government
course as a tire graded 100. The relative performance
of tires depends upon the actual conditions of their use,
however, and may depart significantly from the norm
due to variations in driving habits, service practices and
differences in road characteristics and climate.
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Traction AA, A, B, C - The traction gr ades, from highest
to lowest, are AA, A, B and C, and they represent the
tire's ability to stop on wet pavement as measured under
controlled conditions on specified government test
surfaces of asphalt and concrete. A tire marked C may
have poor traction performance.
Warning: The traction grade assigned to this tire is
based on braking (straight ahead) traction tests and
does not include cornering (turning) traction.
Temperature A, B, C - The temperature grades are A
(the highest), B, and C, representing the tire's resistance
to the generation of heat and its ability to dissipate heat
when tested under controlled conditions on a specified
indoor laboratory test wheel. Sustained high
temperature can cause the material of the tire to
degenerate and reduce tire life, and excessive
temperature can lead to sudden tire failure. The grade
C corresponds to a level of performance which all
passenger car tires must meet under the Federal Motor
Vehicle Safety Standard No. 109. Grades B and A
represent higher levels of performance on the laboratory
test wheel than the minimum required by law.
Warning: The temperature grades for this tire are
established for a tire that is properly inflated and not
overloaded. Excessive speed, underinflation, or
excessive loading, either separately or in combination,
can cause heat buildup and possible tire failure.
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Tire related terms
Cold tire inflation
pressureTire pressure when the vehicle has been parked at least 3 hours or more, \
or it has
not been driven more than 1.5 km or 1 mile under that condition.
Maximum inflation
pressureThe maximum cold inflation pressure to which a tire may be inflated and \
shown on
the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a manufacturer
Accessory weight
The combined weight (in excess of those standard items which may be rep\
laced)
of automatic transmission, power steering, power brakes, power windows, \
power
seats, radio, and heater, to the extent that these items are available as
factory-installed equipment (whether installed or not)
Curb weight
The weight of a motor vehicle with standard equipment including the maxi\
mum
capacity of fuel, oil, and coolant, and, if so equipped, air conditionin\
g and
additional weight optional engine
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Maximum loaded vehicle
weight
The sum of Ð
(a) Curb weight;
(b) Accessory weight;
(c) Vehicle capacity weight; and
(d) Production options weight
Normal occupant weight68 kg (150 lb.) times the number of occupants specified in the second \
column of
Table 1 that follows.
Production options weight
The combined weight of those installed regular production options weighi\
ng over
2.3 kg (5 lb.) in excess of those standard items which they replace, n\
ot previously
considered in curb weight or accessory weight, including heavy duty brak\
es, ride
levelers, roof rack, heavy duty battery, and special trim
Vehicle capacity weight
(Total load capacity)The rated cargo and luggage load plus 68 kg (150 lb.) times the vehicl\
e's
designated seating capacity
Intended outboard
sidewall
(a) The sidewall that contains a whitewall, bears white lettering or bearsmanufacturer, brand, and/or model name molding that is higher or deeper than
the same molding on the other sidewall of the tire, or
(b) The outward facing sidewall of an asymmetrical tire that has a particula\
r side that must always face outward when mounted on a vehicle.
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